pub struct BatchTopN {
pub base: PlanBase<Batch>,
core: TopN<PlanRef>,
}
Expand description
BatchTopN
implements super::LogicalTopN
to find the top N elements with a heap
Fields§
§base: PlanBase<Batch>
§core: TopN<PlanRef>
Implementations§
Methods from Deref<Target = PlanBase<Batch>>§
pub fn clone_with_new_plan_id(&self) -> Self
sourcepub fn clone_with_new_distribution(&self, dist: Distribution) -> Self
pub fn clone_with_new_distribution(&self, dist: Distribution) -> Self
Clone the plan node with a new distribution.
Panics if the plan node is not physical.
Trait Implementations§
source§impl ColPrunable for BatchTopN
impl ColPrunable for BatchTopN
source§impl ExprRewritable for BatchTopN
impl ExprRewritable for BatchTopN
fn has_rewritable_expr(&self) -> bool
fn rewrite_exprs(&self, _r: &mut dyn ExprRewriter) -> PlanRef
source§impl ExprVisitable for BatchTopN
impl ExprVisitable for BatchTopN
fn visit_exprs(&self, _v: &mut dyn ExprVisitor)
source§impl PlanNodeMeta for BatchTopN
impl PlanNodeMeta for BatchTopN
const NODE_TYPE: PlanNodeType = PlanNodeType::BatchTopN
type Convention = Batch
source§fn plan_base(&self) -> &PlanBase<Batch>
fn plan_base(&self) -> &PlanBase<Batch>
Get the reference to the
PlanBase
with corresponding convention.source§fn plan_base_ref(&self) -> PlanBaseRef<'_>
fn plan_base_ref(&self) -> PlanBaseRef<'_>
source§impl PlanTreeNode for BatchTopN
impl PlanTreeNode for BatchTopN
source§impl PlanTreeNodeUnary for BatchTopN
impl PlanTreeNodeUnary for BatchTopN
fn input(&self) -> PlanRef
fn clone_with_input(&self, input: PlanRef) -> Self
source§fn rewrite_with_input(
&self,
_input: PlanRef,
_input_col_change: ColIndexMapping,
) -> (Self, ColIndexMapping)where
Self: Sized,
fn rewrite_with_input(
&self,
_input: PlanRef,
_input_col_change: ColIndexMapping,
) -> (Self, ColIndexMapping)where
Self: Sized,
Rewrites the plan node according to the schema change of its input node during rewriting. Read more
source§impl PredicatePushdown for BatchTopN
impl PredicatePushdown for BatchTopN
source§fn predicate_pushdown(
&self,
_predicate: Condition,
_ctx: &mut PredicatePushdownContext,
) -> PlanRef
fn predicate_pushdown( &self, _predicate: Condition, _ctx: &mut PredicatePushdownContext, ) -> PlanRef
Push predicate down for every logical plan node. Read more
source§impl ToDistributedBatch for BatchTopN
impl ToDistributedBatch for BatchTopN
source§fn to_distributed(&self) -> Result<PlanRef, RwError>
fn to_distributed(&self) -> Result<PlanRef, RwError>
to_distributed
is equivalent to to_distributed_with_required(&Order::any(), &RequiredDist::Any)
source§fn to_distributed_with_required(
&self,
required_order: &Order,
required_dist: &RequiredDist,
) -> Result<PlanRef, RwError>
fn to_distributed_with_required( &self, required_order: &Order, required_dist: &RequiredDist, ) -> Result<PlanRef, RwError>
insert the exchange in batch physical plan to satisfy the required Distribution and Order.
source§impl ToLocalBatch for BatchTopN
impl ToLocalBatch for BatchTopN
source§impl ToStream for BatchTopN
impl ToStream for BatchTopN
source§fn to_stream(&self, _ctx: &mut ToStreamContext) -> Result<PlanRef, RwError>
fn to_stream(&self, _ctx: &mut ToStreamContext) -> Result<PlanRef, RwError>
to_stream
is equivalent to to_stream_with_dist_required(RequiredDist::Any)
source§fn logical_rewrite_for_stream(
&self,
_ctx: &mut RewriteStreamContext,
) -> Result<(PlanRef, ColIndexMapping), RwError>
fn logical_rewrite_for_stream( &self, _ctx: &mut RewriteStreamContext, ) -> Result<(PlanRef, ColIndexMapping), RwError>
logical_rewrite_for_stream
will rewrite the logical node, and return (new_plan_node
,
col_mapping
), the col_mapping
is for original columns have been changed into some other
position. Read moresource§fn to_stream_with_dist_required(
&self,
required_dist: &RequiredDist,
ctx: &mut ToStreamContext,
) -> Result<PlanRef, RwError>
fn to_stream_with_dist_required( &self, required_dist: &RequiredDist, ctx: &mut ToStreamContext, ) -> Result<PlanRef, RwError>
convert the plan to streaming physical plan and satisfy the required distribution
source§impl TryToStreamPb for BatchTopN
impl TryToStreamPb for BatchTopN
fn try_to_stream_prost_body( &self, _state: &mut BuildFragmentGraphState, ) -> Result<NodeBody, SchedulerError>
impl Eq for BatchTopN
impl PlanNode for BatchTopN
impl StructuralPartialEq for BatchTopN
impl ToPb for BatchTopN
Auto Trait Implementations§
impl Freeze for BatchTopN
impl !RefUnwindSafe for BatchTopN
impl !Send for BatchTopN
impl !Sync for BatchTopN
impl Unpin for BatchTopN
impl !UnwindSafe for BatchTopN
Blanket Implementations§
source§impl<P> AnyPlanNodeMeta for Pwhere
P: PlanNodeMeta,
impl<P> AnyPlanNodeMeta for Pwhere
P: PlanNodeMeta,
fn node_type(&self) -> PlanNodeType
fn plan_base(&self) -> PlanBaseRef<'_>
fn convention(&self) -> Convention
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